Abstract
Al2O3 ceramics with different amounts of ZnO-B2O3-SiO2(ZBS) glass addition were prepared by a traditional solid solution process. The sintering behavior, microstructure and properties of ZBS-Al2O3 glass-ceramics were investigated. The results show that with the increase of glass content, the sintering temperature of glass-ceramics decreases, dielectric constant (ε) increases first and then decreases, while the insulation resistivity (ρ) exhibits the opposite trend. Additionally, the dielectric loss (tan δ), thermal expansion coefficient (α), and hardness (Rh) decrease. The glass-ceramic sample with composition of 0.7ZBS-0.3Al2O3 possesses the optimal properties. Its sintering temperature is 950°C with the following property parameters: dielectric constant ε=6.5, tan δ=0.8 × 10-3 at 1 MHz, ρ=2.64 × 1013 Ω·cm, α=5.42 × 10-6 K-1, and Rh=595 MPa, all of which meet the requirements of electronic packaging substrate materials.
| Original language | English |
|---|---|
| Pages (from-to) | 409-413 |
| Number of pages | 5 |
| Journal | Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society |
| Volume | 37 |
| Issue number | 3 |
| State | Published - Mar 2009 |
Keywords
- Dielectric properties
- Glass-ceramics
- Sintering behavior
- Spinel structure